1021121010003 has 16 divisors (see below), whose sum is σ = 1388120232096. Its totient is φ = 667451915520.

The previous prime is 1021121009981. The next prime is 1021121010031. The reversal of 1021121010003 is 3000101211201.

It is not a de Polignac number, because 1021121010003 - 2²⁰ = 1021119961427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021121010053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1932700 + ... + 2403657.

It is an arithmetic number, because the mean of its divisors is an integer number (86757514506).

Almost surely, 2^{1021121010003} is an apocalyptic number.

1021121010003 is a deficient number, since it is larger than the sum of its proper divisors (366999222093).

1021121010003 is a wasteful number, since it uses less digits than its factorization.

1021121010003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4337894.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1021121010003 its reverse (3000101211201), we get a palindrome (4021222221204).

The spelling of 1021121010003 in words is "one trillion, twenty-one billion, one hundred twenty-one million, ten thousand, three".